Their wishlist feature allows me to set up notifications for when books will be available at or below specific prices, which is nice. Also, they have a better selection of some of the more obscure and out-of-print books I like than Amazon does. Since it would be silly for me to actually buy anything at this point, I'm putting a lot into wishlists.

They do have the "Tales of the Jedi Companion", and many similar gaming books. Unfortunately, they don't have gaming books from smaller companies, like Deep7 or Dream Pod 9.

DP9's stuff doesn't move quickly -- they've got a very small number of vocal obsessive fans that gobble it up while the rest of the gaming community whines about the prices (unless they bought it in Canada, where it's DAMN cheap).

Because of that, the people that buy more than just the basic book don't tend to part with their stuff.